Multiple Choice
An observer is standing on the platform of a railway station.A train goes through the station without stopping.If the frequency of the train whistle decreases by a factor of 1.2 as it approaches and then passes him,calculate the speed of the train (assume the speed of sound in air = 343 m/s) .
A) 112 km/hr
B) 31.2 km/hr
C) 56.0 km/hr
D) 62.0 km/hr
E) 122 km/hr
Correct Answer:
Verified
Correct Answer:
Verified
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